[alsa-devel] [PATCH 4/4] Add ASoC support for DEVKIT8000
Vimal Singh
vimal.newwork at gmail.com
Thu Nov 12 11:54:21 CET 2009
On Thu, Nov 12, 2009 at 3:54 PM, Kim Botherway <kbotherway at djdvant.com> wrote:
> This patch add support for DEVKIT8000, it is a copy of Beagleboard sound
> driver
>
> diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
> index 653a362..8cdcfe9 100644
> --- a/sound/soc/omap/Kconfig
> +++ b/sound/soc/omap/Kconfig
> @@ -91,6 +91,14 @@ config SND_OMAP_SOC_OMAP3_BEAGLE
> help
> Say Y if you want to add support for SoC audio on the Beagleboard.
>
> +config SND_OMAP_SOC_OMAP3_DEVKIT8000
> + tristate "SoC Audio support for OMAP3 DEVKIT8000"
> + depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP3_DEVKIT8000
> + select SND_OMAP_SOC_MCBSP
> + select SND_SOC_TWL4030
> + help
> + Say Y if you want to add support for SoC audio on the
> DEVKIT8000.
Patch is corrupted due to line-wrapping.
> +
> config SND_OMAP_SOC_ZOOM2
> tristate "SoC Audio support for Zoom2"
> depends on TWL4030_CORE && SND_OMAP_SOC && MACH_OMAP_ZOOM2
>
> diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
> index 02d6947..7239737 100644
> --- a/sound/soc/omap/Makefile
> +++ b/sound/soc/omap/Makefile
> @@ -15,6 +15,7 @@ snd-soc-omap3evm-objs := omap3evm.o
> snd-soc-sdp3430-objs := sdp3430.o
> snd-soc-omap3pandora-objs := omap3pandora.o
> snd-soc-omap3beagle-objs := omap3beagle.o
> +snd-soc-omap3devkit8000-objs := omap3devkit8000.o
> snd-soc-zoom2-objs := zoom2.o
>
> obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
> @@ -26,4 +27,5 @@ obj-$(CONFIG_MACH_OMAP3EVM) += snd-soc-omap3evm.o
> obj-$(CONFIG_SND_OMAP_SOC_SDP3430) += snd-soc-sdp3430.o
> obj-$(CONFIG_SND_OMAP_SOC_OMAP3_PANDORA) += snd-soc-omap3pandora.o
> obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
> +obj-$(CONFIG_SND_OMAP_SOC_OMAP3_DEVKIT8000) += snd-soc-omap3devkit8000.o
> obj-$(CONFIG_SND_OMAP_SOC_ZOOM2) += snd-soc-zoom2.o
>
> diff --git a/sound/soc/omap/omap3devkit8000.c
> b/sound/soc/omap/omap3devkit8000.c
> new file mode 100644
> index 0000000..6a975d4
> --- /dev/null
> +++ b/sound/soc/omap/omap3devkit8000.c
> @@ -0,0 +1,154 @@
> +/*
> + * omap3devkit8000.c -- SoC audio for OMAP3 Beagle
> + *
> + * Author: Steve Sakoman <steve at sakoman.com>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
> + * 02110-1301 USA
> + *
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/platform_device.h>
> +#include <sound/core.h>
> +#include <sound/pcm.h>
> +#include <sound/soc.h>
> +#include <sound/soc-dapm.h>
> +
> +#include <asm/mach-types.h>
> +#include <plat/hardware.h>
> +#include <plat/gpio.h>
> +#include <plat/mcbsp.h>
> +
> +#include "omap-mcbsp.h"
> +#include "omap-pcm.h"
> +#include "../codecs/twl4030.h"
> +
> +static int omap3devkit8000_hw_params(struct snd_pcm_substream *substream,
> + struct snd_pcm_hw_params *params)
> +{
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
> + struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
> + unsigned int fmt;
> + int ret;
> +
> + switch (params_channels(params)) {
> + case 2: /* Stereo I2S mode */
> + fmt = SND_SOC_DAIFMT_I2S |
> + SND_SOC_DAIFMT_NB_NF |
> + SND_SOC_DAIFMT_CBM_CFM;
> + break;
> + case 4: /* Four channel TDM mode */
> + fmt = SND_SOC_DAIFMT_DSP_A |
> + SND_SOC_DAIFMT_IB_NF |
> + SND_SOC_DAIFMT_CBM_CFM;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + /* Set codec DAI configuration */
> + ret = snd_soc_dai_set_fmt(codec_dai, fmt);
> + if (ret < 0) {
> + printk(KERN_ERR "can't set codec DAI configuration\n");
> + return ret;
> + }
> +
> + /* Set cpu DAI configuration */
> + ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
> + if (ret < 0) {
> + printk(KERN_ERR "can't set cpu DAI configuration\n");
> + return ret;
> + }
> +
> + /* Set the codec system clock for DAC and ADC */
> + ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
> + SND_SOC_CLOCK_IN);
> + if (ret < 0) {
> + printk(KERN_ERR "can't set codec system clock\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static struct snd_soc_ops omap3devkit8000_ops = {
> + .hw_params = omap3devkit8000_hw_params,
> +};
> +
> +/* Digital audio interface glue - connects codec <--> CPU */
> +static struct snd_soc_dai_link omap3devkit8000_dai = {
> + .name = "TWL4030",
> + .stream_name = "TWL4030",
> + .cpu_dai = &omap_mcbsp_dai[0],
> + .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
> + .ops = &omap3devkit8000_ops,
> +};
> +
> +/* Audio machine driver */
> +static struct snd_soc_card snd_soc_omap3devkit8000 = {
> + .name = "omap3devkit8000",
> + .platform = &omap_soc_platform,
> + .dai_link = &omap3devkit8000_dai,
> + .num_links = 1,
> +};
> +
> +/* Audio subsystem */
> +static struct snd_soc_device omap3devkit8000_snd_devdata = {
> + .card = &snd_soc_omap3devkit8000,
> + .codec_dev = &soc_codec_dev_twl4030,
> +};
> +
> +static struct platform_device *omap3devkit8000_snd_device;
> +
> +static int __init omap3devkit8000_soc_init(void)
> +{
> + int ret;
> + pr_info("OMAP3 omap3devkit8000 SoC init\n");
> +
> + omap3devkit8000_snd_device = platform_device_alloc("soc-audio", -1);
> + if (!omap3devkit8000_snd_device) {
> + printk(KERN_ERR "Platform device allocation failed\n");
> + return -ENOMEM;
> + }
> +
> + platform_set_drvdata(omap3devkit8000_snd_device,
> &omap3devkit8000_snd_devdata);
ditto
> + omap3devkit8000_snd_devdata.dev = &omap3devkit8000_snd_device->dev;
> + *(unsigned int *)omap3devkit8000_dai.cpu_dai->private_data = 1; /* McBSP2
> */
ditto
> +
> + ret = platform_device_add(omap3devkit8000_snd_device);
> + if (ret)
> + goto err1;
> +
> + return 0;
> +
> +err1:
> + printk(KERN_ERR "Unable to add platform device\n");
> + platform_device_put(omap3devkit8000_snd_device);
> +
> + return ret;
> +}
> +
> +static void __exit omap3devkit8000_soc_exit(void)
> +{
> + platform_device_unregister(omap3devkit8000_snd_device);
> +}
> +
> +module_init(omap3devkit8000_soc_init);
> +module_exit(omap3devkit8000_soc_exit);
> +
> +MODULE_AUTHOR("Steve Sakoman <steve at sakoman.com>");
> +MODULE_DESCRIPTION("ALSA SoC OMAP3 DEVKIT8000");
> +MODULE_LICENSE("GPL");
> --
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